FA-100769 / Model output stopping rules / Member archive

Output stopping: Stop matches are honored before minimum length · case 04

Stop matches are honored before minimum length.

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

Return generated tokens before the first configured stop ID only when their zero-based position is at least min_new; earlier stop IDs are retained as ordinary output. Also return whether a stop was accepted.

Why this case matters

A deterministic output-control model isolates one finish or streaming boundary from any particular runtime.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
too early retained	`[[], true]`	`[[8, 2], false]`	Failed

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